Theophilus van kannel



. T. VAN KANNEL. Drag-Sawing-Maohine.

I No. 224,809. Patented Feb. 24, 1880.

ZITIZILOW N PEFERS. PNOa'O-LITHOGRAPHER, WASHINGTON D C.

, UNITED STATES PATENT OFFICE.

THEOPHILUS VAN KANNEL, OF CINCINNATI, OHIO, ASSIGNOR TO DAVID L. OHAMBEELIN, OF SAME PLACE.

DRAG-SAWI'NG MACHINE.

SPECIFICATION forming part of Letters Patent No. 224,809, dated February 24, 1880.-

Application filed January 21, 1880.

To all whom it may concern Be it known that I, THEOPHILUS VAN 'KANNEL, of Cincinnati, county of Hamilton, and State of Ohio, have invented a new and 'lmproved Sawing-Machine; and I dohereby declare that the following is a full, clear, and

exact description of the same, reference being had to the annexed drawings, making a part of this specification.

IO Figured is a side elevation, Fig. 2 is a plan, and Fig.3 is a detail, of the center of vibrating arm, taken in line :20 of Fig. 2.

The nature of my invention relates to a machine for sawing logs and wood in other 1 forms, as well as stone, 850., wherein a long saw-blade is to be operated by manpower. j An important feature of this machine conysists in the adjustability of the various work ing parts, whereby the stroke of the handles,

as well as that of the pedals, can bevaried to suit the operator, and either set can be adjusted independent of the other. Thus the operator can arrange the machine to use his legs, more or less, or only his arms, as he chooses; or he may vary the stroke of his hands or his feet toa given stroke of the sawo blade. The operator is thus given a machine that is, in its parts, adjustable to him. He

need not yield his conditions to those of the 30. machine.

In construction my invention is as follows: @A represents a log being sawed, and B B two main timbers resting by one end on the log A, by the other resting on the ground.

From these rise the two. uprights O O, cardrawings, extend upward, where they are hung on adjustable hooks jj. j The arm E is penetrated by shaft I), to which it is fastened, and thesejare more firmly I held together by the assistance of the over- 150 hanging side plates, E. The hooks j are held inany adjusted position by means of setscrews j. The frame is further strengthened by the bridge-piece K and base-board. K.

3 The cross-rods c 0 also strengthen the uprights 0 and resist any lateral or twisting strain.

In operation my invention is as follows: The operator stands on the pedals, and by moving his weight from one to the other the force thus exerted is transferred to the vibrat- 6o ing arm E by the intervention of rods I. In addition, the operator, having hold of handles F, also makes use of them to propel the arm E back and forth, thus giving the saw its reciprocating horizontal motion.

If the operator is a tall man he may find it to his advantage to fasten handles F near the upper end of slot 0, also to move-hooks j farther from the shaft D, whereby he can utilize his natural stroke both of his arms and legs; but should the operator be of low stature, yet strong, the reverse adjustment from that last mentioned will be found most advantageous, preventing him from swaying his body more than to a natural and'easy degree.

If a boy desires to use the saw, the sam adjustment as that ofa tall man is used; but

in this case he gives the saw a shorter stroke.

This gives him a greater leverage over the machine, whereby his task may last longer,

still it does not overpower him.

It will be observed that the two treadles are balanced by being hungon opposite sides of the rock shaft and at equal distances therefrom, and that when weight is put on or 8 5 taken off of either one it at once transfers this force to the saw, as will be seen by the construction of the working parts.

Having thus described my invention, what I claim as new, and desire to secure byLeto ters Patent, is-

1. The vibrating arm E, having attached thereto side plates, E, carrying the adjustable hooks jj, and rods I, all arranged and operated as and for the purpose specified.

2. In a sawing-machine, the frame B G, the vibrating arm E, pivoted in such frame and extending on each side of its pivot, the treadle-levers H H, pivoted to the frame and adjustably hung from they said vibrating arms 100 on opposite sides of its pivot, the foot-pedals arranged side by side, and the adjustable handles F, all constructed, arranged, and combined substantially-as described and shown. T. 'VAN KANNEL. Attest: A. V. STEWART, D. L. OHAMIBERLIN. 

